Planooraph co



.'A. L. RUSSELLAND c. E. susH. METHOD 0F CONFORMING EXIENSIBLE MATERIAL.

APPLICATION FILED OCT. 2. |917.

Patented Aug. 26,1919.

' 2 SHEETS-SHEET! sa g I 4f 48 9 Z0 4542 II I Mw EM -rms commu/I vmuaamim co'., WASHING-rox. D. c.

APPLICA-'HON FILED OCT. 2. |911.

Patented Aug. 26, 1919.

2 SHEETS-SHEET 2.

.Iii

142 2,9 13a 132 gg '14a Urli-FED STATES' PATENT OFFER ARTHUR L. RUSSELL, or nos'ron,` crLAELEs Efenrsnjor BEVERLY; MASSACHU- SETTS, AssreNoRs BY nEsnEnssreNivrEN'rs, 'ro UNITEDSHOE"MACHLNERY con. PoEAtrroN, or PA'rERsoN, NEW JERSEY, Aoonroarron OENEW :rEiasE-Y;y f

Toall'wlirnt concern; i pij j Be it known that'weLARTHUR L. RUssELL and CHARLES E. GRUsH, citizens offf the United States, residinglat Boston, the county of SuollQand at Beverly,f.in `the countyofEsseX, State of Massachusetts, re spectively, have invent/ed certaindmprovements in Methods of Conorming Extensible ,Materiah of `which `theyfollowing,description, in connection with'the accompanying drawings, `is a specification, like reference `characters on thedrawings indicating like parts Vin theseveral gures." j

thmanafeture This `invention rel tes to of articles which are generally to conform to surfaces over whichitheyareto b efplaced, and in particular tomethods `of thus shap- :ing'ertensible material t0 elect an econonify thereof,u a reduction :in labor costs, 4fand improvements 1n thefit of the articles a Y In one aspect the invention comprisesa method'` of 4 operating upon Vthe materiall ,Ain

such a manner asto effect local interior ull- @Sebr- Subjeetlig Said niatefeltslsreeted tensioning operations whichL are. applied upon the same, adjacent or successivejgportions and whichinfthe aggregate, preduce fa greatereffe'ct overthe desiredinterior area t ftha'n; atatheedge portions. j The method ,c611- templates subjecting a small Varea lonly of Y `,the stock to' tension at' a time, relieving the j [stretching to'a `'grjeaterf or alesseXtent,- according to the number of pulling'operations tension',` then subjecting' the-sameor an adjacent portionof` the stock to tension durj a' Aingrthe continuous application of repeated pulling or stretching operations,jto"rthe end that interiorly located areas of the 'upper maybe permanently stretched. j' 4By'` thus Vwhich .j are applied' to a' given area, the-` integfrior .portions ofa` sheet of "material, the

fsame may be permanently stretched before application t0 a form, and be thereby 'made Y to fit truly its varying contour. An'eXample ff the benecial elects of treating material "in the manner contemplated .by thisv method is'found in its adaptability for tting the upper of' a shoe `to the 4high toes and the low ballsand deepl shanlrs` ofmodern lasts. l* The method. may be practised either by the manipulation ofsimple toolsA inthe `hands j of an operator, orbyfa suitable machine.

'In either case af portion Aof stock willbe fengaged at adjacent points and, by movement.

` thereof `in the finished l shoe.

METHoLoE coNEoEMINe EXTE'SIBLE MATERIALI spe'caaonof Lettefsratent.- PatfedAug; 26919151 Appucatinma october 2, ieizfserialfNo. laagsefs(` i Y M ofl-tth`e engagingmeans relatively apart,"'the 1nterve1'r`11ng'portieri` `of .the stock will be stretched' the Vdirection relatively to the length of the last whichfisrequired to` make j i,

the upper` lit over thef'paticular portion of the last upon which it is to be applied'. f Machines which are well adaptedfto carryout the steps 'of the presentfmethod are' shown,

described,"'and claimed, in our prior applicationsy for Il.k lVS., `Letters Patents, `Serial A No. 827,609, fiicrMarchfe'z,1914, andserial No. 109,664, led Julyl,v` 1916,"of"whichfap Aplioations; the presenti application is in part Ya fciontirmation;` t

tion of lsimple"`imple'irients the hands of the operator,l the "stock f will be"V engaged at `adjacent `will by tli"e`mvenient "If the' method is'Carriedaware/65mer fhaeagagiag mean. relatively aparajjbe, l

stretchedlocally tothe required extent, and

at ,the desired' "points within fj "the edges `of `the jstoek, 'in Vthe'same manner as contemplated by the machines of the'applications above referredt.

In practising' the methd 'the stretfhng sired points' andto the extent required for each 'area being stretched. The seizing means may bein the form of two pincers whose jawsy are spaced apart at appropriate distancesvand are adapted to seize,- adjacent portions of the stock, to be moved apart for stretching the stock, and to then retract,

.and also to separate and release the stock.

Under one aspect of the `method the" stock,

after' beingseized and Stretchedby apply-- king 'tension to an area lyingj-,between the pointsl fof seizure, is heldundertension for a-suitable intervalv between? the stretching movements, and is thereafter released. By

repeated applications of the stretching fae-` j tion to the same, or adjacent portions, of ,thelstoclgand by holding lthe ,stock under tension following eachV ofi-said applications,

`the stretched condition ofthe Astock beomes permanent, whereby it may be caused to conform Ato the Varying curvaturestothe sur- `face'of theflast, and Vt0inaintainathe shape The method' wil-1b@ explained in connection with two forms of niachinenwhich are substantiallyY the saine as thosedisclosed prier applicntpnnabpnereferpedton@mi -elplkncwnysuitable` nstrumentnlitenfol@ Cnrryn- 'Y ing themethodninto eifach p Itis 1to1 :be 1111-. derstood, however, that the method may alsoV be practised by other.. forms ofamachlne, "01' i' Y by hand, and the performance of its several Stepp 'iS` 11p- Sense limited t0 fthe/'madame herein illustatedby way of example only. l

Referring to the accbmpanying' drawings i@ national; 'O @ether 'fermlf meme@ 'by which thin 'method nientV lengthwise ofthe arms toward and IThe upper; "nl lnflsL 2.05124 Garry," rewhich isfsusp'ende'd from itsarln by a pair ofparallel links 32K-'and 38,.;39, Figf'lf as the pin'oers .ape moved. apartV one Vtop irard [the left and the other Vtoward thev `right `the'y against npward VeXtefn'sions The dfY 44 passes loosely Vare arranged to bef'pre'ssed"togetherbetween ley-this engagement witlthefstops 45th@ Links :361: 3T and" 38, 3 9.. turned ini the direptionl f lift the'jaw. arid rlne thligrip be werk- The points in'their stroleQinrwhich this release "occurs and jrthelefore the 'length of the upper'pulling or stretching'movements is determined by the positions oittheistops '45 and thiscanbeY adjusted by tnrning'the rod whichffor this-purpose has a rigid collar instrnrnent by whichto'-1o`i:af tethefrofillz The f 47 withiradial holes for applicationfof an prevented vfrom vtrnl'ng fby "The pincers areeaused'to'reciprocate, to-

"ward 'andi away ffrom'Qeachfotlier.' Vinn order i that theVV jawsI may-be'pnade to engagebwith" n Yand grip interior portions'o'theleatherland shown,V Vthisl reciprocating-'movement ofV the pincers is elfectedj through linksiifbetween vthe lowe'larrns 22,' 26offthepince'rs Vand a reciprocating Vbar 68', thefy latter-being loper.-

e'nd'oV thepowerfshaft 6.V 'Preferably the bar hasja carnlslot'70'in which-the cjank pin Vworks toac'celrate thefmovementfof the-pincers'idringfthefirst porton'ofithe Y Y' thfrowf'ofr the"Y (jrankV and to Vretard it before the retnrn'stroke begins", thel obj'ectbeing Vtoobtain quick grip' VtheV stoel:` and an initial stretch'witha slowfnal stretchfnearly A f v Y shown asf'snch thatwhenlthe"crank'pin arms 22; 26; c 'rryxed pincer fjaws'" 285V operatind along the npwardlyinclinedflower pin i ves backwardly"down'ftlie ca'rnslot the crank pin @Indy Shaped Capa caused to feed the work automatically v`ti Stretching" OperntpILThS isinpcepllslied pinperfepoephetfpk dunnetlnepullinefmovemet wh' the ier-ipplei 'Y n the di- I firework 'by `a ferred; Sprin 55 "the levers 40', 41` to locate one` or the otherstop farther from the gripping point according to the direction of feed desired.

lThe -rod 4'4 has a fixed collar 46 between 5 which andthe collar 47 is located an arm 48 of a rock shaft *50 mounted in a bearing arm of the frame. At its rear end the rock AshaitOhas anarm 52 having the lost mou i tionfprovided between the stops o and c on the garm and a iXedlstop b which is Arigid withftlie rock shaft. rllhe free end of arm 52- is connected' pivotally to a rod 54 which latter inturn'is connected by a ball and socket joint .with an Aangle lever 56 on `which isa kneefork 58 through `whichthe operator can rock the shaft-,j to place `one stop 45 nearer than the other to its lever 40 or 41.` In such position the nearer stopV 45 will :cause its coperating "lever ,to liftits 34 while the other jaw continues to "grip thestockwithmaximum force. The `p'incer Vso grippingthe stock`will therefore fedlthefstock invtheidirection of its movementfat'the end "of" each stretching move- "125 mentof the pincersand therefore will prejent afresh portion of stock to be gripped and stretched at each operation of the machine. The direction of feed is determined by the direction of movement of the knee `"41550 fork58 and "he length of the feed Vis'determined bytheextent of movement of the A'lnieewfork.` The lost motion at a, 12", c prevents feeding when manual manipulation of the operators hands is pregs 60, GOabove land below the `guide` center'theknee fork normally. A Hsprfjilligij-y plunger fhavingj a tapering `head *jlocatedf'in a"V- haped' notchin arm 48 norf ""inally 4cei'iters the'rockshaft 50.

V:""of this machinefthe operator first inserts j thejfwork," after fh'avlng pressed inwardly Viipon.fthehandle"extensions .401,41 which 4raises themovable' j aw-s of the, pincers by 45 fthe parallel links, `.In placing theshoeupi"perjor sheetof stockf on 'the' lwork table, it fwill be seen th t the operatormay locate the j (stock `nfsuch position that the interior area "which is to bestretched may be selectedby ""work has 'been 'so positioned the handles 40,

rifareA released and" the Springs 49 vwill cause j the upper` Yjaws toc'lamp the workagainst j lowerfjaws ofD the pincers with' a light Y yielding pressure. Vhen the mach-ine is other Vsuitable instrumentality,` j ,willbe reciprocated inward and "outward .startedby lthe "actuation i of "a clutch, or the pincers fand the-Work will be gripped and stretched the pincers separate, fand released from i 'action 'of the pincers, as the ter ,approach each other, these. actions eingf repeated a suitable f number ofl times,

{s-fat theiwui ofV the spaeter, amai meneame The pulley shaft carries Ma `disk j plunger,

jaw-supporting links spe'ctivelyV sustain*` through pivots each fof theupper pincer jaws faces j, arefconstructed` to friction'ally "engage amountiof stretching has been accomplished. The work is' manually'held smooth and in slight frictional `contact with the table and as the pincersmove outwardto stretch the stockwhich has been seized bythe jaws thereof, such movement `will continue until the lever extensions 40, 41 or either ,of them strike the release' stopsi45, following"j which if one release stop is `struck rst the Ystock will be fed toward the otheron'e by the' continued `ull of the. pincer "associatedjwith saidother stop. [Upon a'reverse `(")rii'iward movement of thefpincers the movable jaws 32, 34 will, by yreason ofthe inclined posi- Y of their supporting "links slide over the tion stock, `which latter will be rengaged-by `the jaws and furthei stretched when the pincers n V9,0 has avertical slot 92jwhich receives a guide pin v94 projecting rigidly fl-rom* the frame base, said'parts servinv to preventrotationof thescrew stem. 'y turningthe hand wheel the screw steml will be caused to feed up or down Vaccording to the direc tion of rotationand the lwork table `may' thus frame 7,45 havin a base 7 6 inwhich from a "plate which be adjusted tojlocate its iwork-receivingsurj facey in the desired'relation to"theplane of the pincer jaws. .During the" rotationof the hand wheel ,engagement of the `1ug84 with the rgroove 82 Awill prevent vertiealimovef ment of the hand wheel.

The upper part of themachineV frame supe i' ports bearings `for a driving shaft carrying a pulley 96 to which may be applied a belt4 for receiving power from -a suitable,4 source. M `havingl a crankpin 98lthereon which runs'iin a cam groove99, lin a ca'm block 1040;v The cam blockopera'tes a plunger-1102 which is guided for reciprocating movements by alplate`104, bolted to theV frame,

and aJ stem 106 i rigid withV .the` upper part of i thecam block and guided by a j plate 108 Awhich is likewise boltedto thefranie.` There is a yielding lost motion`,connectio`n between the stem and as shown in the drawing, and the plunger 102 sustains, byja pivot 110, the two 112, 112, `whiehjre- 114, 114, whose lower 'the-stock. The'links 112 have divergently extending upper endportionsfllti `which are HQnormally acted upon bya spring`118i which f-Jholdsthe-jawpressedtoward each other and material which consists in subjecting said material to successive stretchings, the aggregate tension applied being greatest over a predetermined interior portion located at a substantial distance `from the edge portions, thereby producing fullness of such l interior portion.

2. A method of stretching leather or similar stock, which comprises subjecting a limited interior portion'of the stock remote from and which does not include its edge portions to repeated pulling operations to effect fullness of a predetermined interior area of the stock for enabling it to fit over a curved surface.

3. A method of treating shoe upper stock to provide it with local fullness for enabling the stock to conform with the inequalities of surface of a last, comprising seizing the stock at points located Wholly within its edge portions and applying to the stock a plurality ofst'ock-tensioning operations to permanently stretch it only at those portions where local fullness is desired.

4. A method of treating-stock for effecting local fullness to` cause the stock to lit over varying surfaces, comprising engaging the stock at adjacent points located wholly within the edge portions of the stock, and repeatedly tensioning the stock between the points of engagement until permanent fullness of the tensioned area only is effected.

5. A method of stretching stock for effecting local fullness to cause the stock to t over varying surfaces, comprising engaging an interior portion of the stock at a plurality of points, applying tension to an area of the stock lying between the engaged portions, holding the stock under tension a sufficient time to produce a permanent stretch,

releasing the stock, engaging fresh portions and repeating the operations until the desired amount of fullness is effected.

6. A method of stretching stock for effecting local fullness to cause the stock to Copies of this patent may be obtained for ve cents each, by addressing the fit over varying surfaces, comprising seizing the stock at separated points, pulling the stock so as to stretch an area thereof, releasing the stock and repeating the operations by applying the pulling strain in different directions over the area being stretched, the complete stretching being confined to an area lying within the edge portions of the stock to provide a permanent condition of fullness in such area.

7. A method of treating stock, comprising engaging the stock at points located interiorly of its edge portions, moving the engaging means apart to stretch the stock, releasing the stock, feeding the stock, and repeating the operations until the desired amount of stretching is eected to produce fullness only of the stretched area for enabling said area to conform to an elevated portion of a form. Y

8. A method of treating stock, comprising subjecting an interior portion of the stock to successive stretching operations so as to produce fullness only at the stretched portion upon the completion of said operations, and feeding the stock between such op erations.

9. A method of treating stock, comprising subjecting a limited interior portion of the stock remote from its edges to aplurality of tensioning operations, and holding the stock under tension for an interval of time between such operations sufficient to make the stretch permanent.

10. A method of located interiorly of and remote from its edge portions, holding the stock under tension sufficiently to make the stretch permanent, releasing the stock, and repeating these operations until the stock has beenstretched to the desired extent.

11. A method of treating stock, comprising seizing portions of the stock at spaced points lying within a limited area interiorly of its edge portions, moving the seizing means apart to stretch the area of the stock lying between the points of seizure, holding the stock under tension, for an interval of time sufficient to make the stretch permanent, releasing the stock, feeding the stock, `and repeating the stretching operations over a different area.

In testimony whereof we have signed our names to this specification.

ARTHUR L. RUSSELL. cHARLEs E. GRUsH.

Commissioner of Patents,

Washington, I). G. 

